The first time I had this dish at California Pizza Kitchen I thought it was great.  I eventually found one of those “copycat” recipes that I think is very close.  This one came from http://www.cdkitchen.com/recipes/recs/512/California_Pizza_Kitchen_Chicken_Tequila_Fettuccine44247.shtml.  It has a little kick, but if you prefer really spicy you might want to add extra jalapenos.  I’m pretty much a wimp, and I usually add double what the recipe calls for as well as double the peppers using a whole one of each color.  Like any cream sauce, it doesn’t really reheat that well, but I’ve found that if you add just a splash of milk and microwave for the smallest amount of time to warm it up and stir well, it will come back nicely.